Bug#496627: build depends

[Frank Gevaerts <frank@gevaerts.be>]

Package: wnpp
Followup-For: Bug #496627

This seems to miss lots of build-depends

-- System Information:
Debian Release: 5.0
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)